Lemon Tree Punch (Clone)

9/7 - 9/12 Unfortunately this was the last week of the grow. I wanted to go atleast one more week but whatever is affecting the few plants started to reach the bud. I think I'm going to chalk it up to some kind of disease as it only seems to hit 3 of 7 badly. A 4th looks like it was starting to do the same as well. Every plant in the tent got the exact same amount of nutrients and water every 2-3 days depending on my availability. I tore into the root ball the day after cutting of the plants that were the issue and all seemed very dense and strong and nothing looked out of the ordinary. I do think that my cloning practice might have been the cause as I use an aeroponic system and these clones took close to a month to have decent roots and even then I wasn't too happy with them. I had issues with the water getting very warm and definitely exceeded 85° from the pump and I only changed out the water after 3 weeks of no rooting. I do believe that this could have been avoided if I did more research into clean and healthy cloning practices. The mother of these guys was also outside when I took them as it got too large for my indoor area and I decided to flower it out this year. The mom is currently pretty healthy so I don't think it caught something from outside but who knows. I'll definitely take this grow as a learning experience and I thank everyone who answered my question.